<template>
  <div>
    <button @click="add">{{ state.count }}</button>
    <button @click="add2">{{ num }}</button>
  </div>
</template>

<script setup>
import { reactive, ref } from 'vue'
const state = reactive({
  count: 0
})

const num = ref(100)
const add = () => {
  state.count++;
}

const add2 = () => {
  num.value++;
}
</script>

<style lang="css" scoped></style>